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How do I check if an HTML element is empty using jQuery?
...').is(':empty')){
//do something
}
for more info see http://api.jquery.com/is/ and http://api.jquery.com/empty-selector/
EDIT:
As some have pointed, the browser interpretation of an empty element can vary. If you would like to ignore invisible elements such as spaces and line breaks and make t...
C# Events and Thread Safety
...e JIT optimization and memory model aspect of the question; see code.logos.com/blog/2008/11/events_and_threads_part_4.html
– Bradley Grainger
Apr 29 '09 at 20:58
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Call a function with argument list in python
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IN vs OR in the SQL WHERE Clause
...flagranti: No optimizer is perfect unfortunately. Optimizers are extremely complex programs and each implementation will have its own strengths and weaknesses. This is why I say you should profile on a specific implementation. I'd imagine that the extra structure of the IN method makes it easier to ...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
... uses 2.2), PHP and all the extensions you need, then upgrade all with one command. Forget to do the same with Homebrew.
MacPorts support groups.
foo@macpro:~/ port select --summary
Name Selected Options
==== ======== =======
db none db46 none
gcc ...
Why can't I forward-declare a class in a namespace using double colons?
... class Class is later defined as a member of different namespace - it is a completely different class that has nothing to do with the one you declared here.
Once you get to the point of defining the pre-declared class, you don't need to "reopen" the namespace again. You can define it in the global ...
How to see which flags -march=native will activate?
I'm compiling my C++ app using GCC 4.3. Instead of manually selecting the optimization flags I'm using -march=native , which in theory should add all optimization flags applicable to the hardware I'm compiling on. But how can I check which flags is it actually using?
...
Determine distance from the top of a div to top of window with javascript
...
You can use .offset() to get the offset compared to the document element and then use the scrollTop property of the window element to find how far down the page the user has scrolled:
var scrollTop = $(window).scrollTop(),
elementOffset = $('#my-element')....
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
I was watching this , and, as you can see, the first command I am told to put in is:
5 Answers
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Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...ir: [/root/postfix-2.9.1] /tmp/postfix
config_directory: [/etc/postfix]
command_directory: [/usr/sbin]
daemon_directory: [/usr/libexec/postfix]
data_directory: [/var/lib/postfix]
html_directory: [no]
mail_owner: [postfix]
mailq_path: [/usr/bin/mailq]
manpage_directory: [/usr/local/man]
n...